Structural head for reenforced concrete construction



May 5, 1931;. E. w. HYDE. JR

vSTRUCTURAL HEAD FOR REENFORCED CONCRETE CONSTRUCTION Filed Feb. 15,1929 8 Sheets-Sheet l w w l, m LD@ o o 7o o)` m Q Q Q Q/Q o o Q 0 0 0CHW@ Q n o. .4. Ao Q O O 0 Q. 0 O Q .0 o Q .w 0 Q O ,O Q 050,015 o Q o,o Q C O C C Q eo Q Q ,Q o ,o /o o @www3 a;

W, mm

J 1279.51 'II .INI/ENTOR.- A E M Hyde di.

ATTORNE E. w. HYDE. JR

May 5, 1931.

STRUCTURAL HEAD FOR REENFORCED CONCRETE CONSTRUCTION Filed Feb. '13,1929 8 Sheets-Sheet 2 May 5, 1931. E. w. HYDE. .1R

STRUCTURAL HEAD FOR REENFORCED CONCRETE CONSTRUCTION Filed Feb. 15, 19298 Sheets-Sheet 5 INVENTOR. lfm/.Hyde df.' m'.

' ATTORNEY.

May 5, 1931. E. w. HYDE. JR 1,804,342

STRUCTURAL HEAD FOR REENFORCED CONCRETE CONSTRUCTION Filed Feb. l5, 19298 Sheets-Sheet 4 A TTORA/EY May 5, 1931, EL w. HYDE, JR '1,804,342

STRUCTURAL HEAD FOR REENFORCED CONCRETE CQNSTRUCTION Filed Feb. 1s, 1929s sheets-sheet 5 @.I o o O O O O I S* O l y I I v NJ O i (D l' O I i I@O N O @i O O i@ O C O 3' n n O 0 I N\\ E-LCLL- QW l@ 3 @rnv/"n O Sli*WQ-" C) G O f'l Q I *"x i w=l Se If i" f2 o 0 0 0 'I l l :I l 5: I l

Y /m/f/vraf? la i M/.Hyde JK 1 ATroR/VEY May 5,4 1931. E. w. HYDE. JR

STRUCTURAL HEAD FOP` REENFORCED CONCRETE CONSTRUGIION Filed- Feb.l 13,1929 8l Sheets-Sheet 6 ATTORNEY 2 4 3 4 o 8w,\nNv 1I T .C U R T s N 0 C.E T E R Rw .,w Em. DC R YO Hw .E R am F D A E H L A R U T W R T s kMay5, 1931.

- FiledFeb. 13, 1929 8 Sheets-Sheet 7 Nbr l INVEN ToR E W Hyde Jr. er

j -ATT RNEY May 5, 1931. E. w. HYDEQJR 1,804,342

STRUCTURAL HEAD FOR EENFORCED CONCRETE CONSTRUCTION ,Fil-ed Feb. 13.1929 8 Sheets-5h68# 8 [NVE/V TOR TM/.Hyde Jl.' @Y

Arro/ysy Patented May 5, 1931 Aunir 'raras PATEN 'r oFFicE EDWARD W.HYDE, JR., PHILADELPHIA, PENNSYLVANIA; CATHERINE E. HYDE EXECTRX. OF SADEDW'ABD VI. HYDE, JR D'ECEASED STRUCTURAL-HEAD FOR REENFRCEDCOIBTCRE'EEv CONSTR-UCTION Application sled February 13, 1929. serialNo. 339322.

This invention relates toy certain new and useful improvements instructural heads for .reenforced concrete constructiom'the object beingto provide a head of such a size that it i extends outwardly a suiicientdistance into the concrete slab where the slab isV of itself strongenough in shear and ieXure to resist the stresses that come upon it.

Another object of my invention is to pro- ;O vide a structural headadapted to be em-l bedded in the up er end ofV a column and the adjacentportion of the slabs whereby the reinforcing rods'of the column are tiedto the reinforcing rods of the floor slabs so l5 ras to relieve theslabs from the heavy shearing and flexural stresses that occur close tothe column whereby these stresses will be effectively resisted. i

'Another object of my invention is to prom vide a head having 'alateralshelf extending loutwardly from the ledgethereof into theadjacent slabs so that the concrete just outside of the head representedbythe distance around the shelfl angle, multiplied by the $53 verticaldistance from the top of the outstanding leg` of the lshelf angle to thetop of l .to Figure 2, of one portion of the head'showthe slab in squareinches of area constitutes the effective area to resist the shear andthe llower portion of the slab just outside the shelf j fr angle andabove and below'theside of the 4same together with the lower orhorizontal leg of the angle will resist compression in its maximumamount in the slab; whereby I am able yto producea condition of strengthsimir lar to. thatwhich would be produced by a flaring concrete headY orcapital belowA the slab at the junction of the column with the slab. f

Another object of my invention is to pro- 0 vide a structural head inwhich the reinforcing elements of the slabs are more effectively Ytied-to the column in connection with means rwhereby the slabs areinterloclied withfthe heads beyond the column so that a construci i tionis produced which will withstand the stresses to which it is subjected.

A further object of my invention is to provide a structural head whichis capable of be'- ing used on center of side columns, around f5@elevator shafts, air'shaftsor chutes and one which is so constructedthat the reinforcing rods of the slabs and columns are indirectlj7 tiedtogether in connection with a construc-V tion whereby the concrete ofthe slabs and columns are interlocked for giving van' addi# tionalstrength to withstand the stresses to which they are subjected. i

A still further object of my invention is to provide a structural headwhich is exceedingly simple and cheap in construction and one which canbe readily placed in position and when in position will have 'aninterlocking connection with the reinforcing rods of the slabs andcolumn and withl the `material from which the slabs and column areformed.

Other and further objects and advantages of the invention will behereinafter set forth and the novel features thereof defined by theappended claims. f

In the drawings, Figure 1 is a top plan of structural head; j

Figure 2 is a vertical sectional view .of a column showing the vheadembedded therein and also embedded in the slabs; n

Figure 3 isa vertical sectional View similar View of one form ing thereinforcing rods of the slabs passing through the angle and under thehead;

Figure 4 is a top plan view of a structural head used on a side column;Y

Figure 5 is a verticall sectional view ofia side column showing the headembedded therein andalso inthe slab; V

Figure 6 is a top plan view of a structural head used on a cornercolumn; V

` Figure is a top plan view of a hexagonal structural head;

Figure 8is a vertical transverse sectional View of Figure 7; f i lFigure 9 is a top plan view of a circular structural head;

Figure 10 is a top plan view of .a structural head used on a column atthe corner of an elevator or like shaft; 2

Figure 11 is a vertical sectional view of Figure 10; f f

Figure 12 is a sectional view taken on the line l2-12, Figure 10;

Figurel?) is a top plan view of a rectangular structural head showing arectangular piece cut out so that provision is made for a vent shaft orthe like;

Figure 14 is a sectional view taken on the line lll- 14, Figure 13;

Figure 15 is a top plan view of a structural head built ofa series ofangle irons, H and I beams;

Figure 16 is a vertical sectional view takenV through the column andslab;

Figure 17 is a plan of a structural head made up of a series of angleirons and beams to be used on a side column;

Figure 18 is a top plan view showing a structural head made up of asingle casting;

Figure 19 is a vertical sectional view through a column and slabsshowing the cast structural head shown in Figure 18 and i "Figure20 is atop plan view of a cast structural head used on a side column.

In the embodiment of my invention as shownv in Figures 1 and 2, 1represents a concrete column arranged between the floors of a concretebuilding which are preferablyV formed in the usual manner by pouring theconcrete into'a form with the reinforcing rods extending verticallytherein and in practice these rods preferably extend above the form toenable the reinforcing rods of the column above to be connected theretoand to allow the structural head to be interlocked therewith as will bemor-e fully hereinafter described. In using a structural head as hereinshown, when a column hasy been poured to the upper end of the form thehead is placed on the top of the form or in its proper position so thatwhen the floor slabs arev formed, it will be embedded in the column andthe adjacent portion of the slab.

The preferred form of structural head is shown in Figures 1 and 2, ofstructural head 3 consisting of a flat rectangular metal plateetprovided with a plurality of vertically disposed openings 5, throughsome of which the reinforcing rods 2 are adapted to pass, the otheropenings forming means to receive the concrete -for interlocking thehead within the same.

The reinforcing Arods 2 preferably extend upwardly above the floor slabas in general practice into a column 7 above the lower columns, thereinforcing elements being fabricated as the structure is carriedupwardly` Surrounding the outer edge of the head 3 is a laterallyprojecting shelf formed by Z- shaped bars 8 secured to the head by anysuitable means such as welding or rivets 9. TheseV Z-shaped bars 8 aresecuredtogether at their corners by means of -angled irons 10 bolted orriveted to the vertical walls of the Z bars so thata marginal outwardlyextending horizontally disposed flange' 11 is arranged around Vtheentire circumference of the head in, order to form a support within theslabat a point beyond the column.

In practice the lower reinforcing rods 12 of the slabs 6 are preferablybent upwardly over the shelf as indicated at 18 and turned downwardlyinto the openings 5 of the head. The upper reinforcing rods 15 extendentirely across the structural head into the adjacent slabs on the otherside of the column so that the structural head and reinforcing elementsof the column and slabs are connected together and in practice thesereinforcing elements of the slabs cross each other at right angles asshown.

After the head and reinforcing elements have been placed in properposition on the upper end of the columns, the concrete is poured intothe mold in the usual manner and the concrete fills all the openings 5in the head so as to key the same to the slabs and columns. At the sametime the concrete enters the openings around the reinforcing rods 2 ofthe column and rods 12 of the slabs so that the rods are'tightly lockedin the head, the Z shaped bars 8 and flanges serving as an addit-ionalsupporting means and locking means for the slabs in tying thereinforcing elements of the columns and slabs together.

In the embodiment of my invention as shown in Figure 3 I disclose aconstruction identical with that illustrated in FiguresV 1 and 2 `withthe exception that the vertical portions of the Z bar 8 are apertured asshown at 82 through which the lower reinforcing rods of the slabs areadapted to pass as clearly shown, these rods extending under the headinto the columns and can be connected together and connected to theupper reinforcing rods 15 of the slabs whereby an additional means ofinterlocking the reinforcing rods of the slabs and head together isformed, which provides means to withstand the Vcompression in the slabadjacent the' head.

From the above description it will be seen that I have provided astructural head of such a construction that the reinforcing rods of thecolumn and the reinforcing rods of the slabs are united through themedium'of the head which is of a sufficient size to proide means tosupport the slabs beyond the columns so as to resist the shearing andilexural stresses which occur adjacent the column.

In the modification of structural head as shown in Figures 4' and '5instead of forming the head square as shown in Figures 1 and 2, anoblong head 16 is provided having the usual lateral flange and in thisinstance the Z shaped bar 17 is omitted from one side thereof to allowthe head to be used in a side column instead of aY central column and inthis form the reinforcing rods 18 of the side column pass through theopenings 19 formed YinV the head and the lower reinforcing rods 2O ofthe slabs are arranged and connected to the head in substantially. thesame manner as shownv in Figure 2. The upperl rein. forcing rods 21 ofthe slab` have their ends turned downwardly l into the openings throughwhich `the vertical rods 18 of the column pass so as to tie these rodsto the head.

In Figure 6 I show a structural head 22 formed of an apertured vplatehaving the lateral flange omitted from two of its sides as the Z shapedbars 23 are only secured to two of its side'edges, which produces aconstruction of head especially adapted to be used on an outside cornercolumn and it is, of course, understood that the reinforcing elements ofthe columns and slabs can be connected thereto in the same manner as'previously described. Y

In the form shown in Figures 7 and 8, an octagon shaped head 24 isproduced comprising a central apertured plate having all of its eightsides provided with Z shaped bars 25 toproduce an annular laterallyprojecting shelf, the bars being secured to the central plate by boltsor rivets.

In the form shown in Figure 9, a circular head 26 is produced having anannular shelf formed by a ring 27 substantially Z shaped in crosssection so as to produce a peripheral shelf which entirely surrounds thecircular center which can be used in connection with columns and is ofsuch a size that the flange is embedded within the adjacent portions ofthe slabs beyond'the columns.

In the embodiment of my invention as shown in Figure 10, a structuralhead 28 is formed in substantially the same manner as shown in Figures 1and 2 having'v the marginal flange. In this construction one of thecorners is cut away as indicated at 29 adapted to receive the I beams 31and 32 which are connected to the head by bolts within the cut awayportion as clearly shown and this construction of head is especiallyadapted to be used in-connection with an elevator shaft in which the Ibeams form a part of the structure and the reinforcing rods 83 of theslabs extend over they intersecting rods of the slab and are turneddownwardly into the openings of the head,V the reinforcing rods passingover the I beams as shownV in yFigure 12, the lower reinforcing rodsbeing bent downwardly to form a connection therewith so that the heads,Ibeams, columns and slabs will be interlocked together.

In the embodiment of my invention as shown in Figures V13 and 14 I showa construction of head 34 especially adapted to be used in connectionwith a chute o-r the like yand it is of oblong form having one ofitsthese rods terminate short ofthe I beam and have their ends extendingover the Z bars and are bent downwardly into the openings of the plateof the head as clearly shown.

In all of the constructions of heads as pre f vio'usly described, theunit was formed by a thicker slabs are used. In constructing a `g headof a series of elements as shown, the same is preferably formed of twospaced plates 40 and 41 between which are secured 'by rivets or anyother suitable means as shown at 42 radially extending I' beams 43 and44 whi'chhave their outer ends formed with laterally extending lugs 45and 46 adapted to`be riveted to the-verticalportion `of an L bar 47herein shown formed of a single piece of metal extending entirely aroundthe outer edgeof the head and while I have shown these bars riveted, itis, of course', understood that they could be secured together byanysuitable means, 'such as bolts, rivets or welding-j This provides abuilt-up construction? composed ofcentral spaced plates with an annularshelf spaced therefrom. The plates 40 and'41 are provided with aligningsquare openings 48 to Aallow the steel frame 49 of thebuilding to passupwardly therethroughv and these plates are also apertured to receivethe reinforcing rods of the column surrounding the frame andare adaptedto have connectedthereto thev reinforcing rods of the adjacent porftions of the slabs. In' thisformy I provide `openings 50 for thevertical reinforcing rods 51 and -the reinforcing rods-52 of the slabshave their ends :53 turned downwardly so that they willY extend throughthe aligning openings in the top and bottom plates 40 and 41 of the headas clearlyshown in Figure 16 `and in practice I preferablyprovideadditional openings in these plates so that the concrete rwill bekeyed thereto.

In the modification shown in Figure 17 I illustrate a structural lheadfor a side column of the built-up type constructed substantially asshown'in Figures 15 and 16, a portion of the same being cut away and atransverse beam 54 employed to support the free edges of the plates 55and the L bar 56. It is, of course, understood that the shape andconstruction can be changed to meet the lll() lit) requirements of thebuilding under construction.

In the embodiment of my invention as shown in Figures 18 and 19 I show astructural head 57 of cast metal having an annular shelf `formed by afiange at its lower edge, the same being adapted to be used insubstantially the same manner as the preferred form and in thisconstruction the hub' portion is provided with a central opening toreceive a tubular column of the steel structure and also has a lateralflange 59 provided with a plurality of openings adapted to receive thevertical reinforcing rods of the column and horizontally disposed rodsof the slabs. A

In Figure I have shown a cast construction partly cut away, especiallyadapted to be used in connection with side columns, the constructionbeing substantially the same as shown in Figures 18 and 19 in order toprovide means for interlocking the various reinforcing rods of thecolumns and slabs together and for keying the head in position withinthe slabs and columns.

While in the specication and Adrawing I have described various formsv ofstructural heads to be used in connection with concrete constructions, Iam aware that the various shapes can be modified to suit the particularconstruction of building being formed and therefore I do not wish tolimit myself to any particular shape of structural head as my inventionconsists of a structural head :is of sufficient size to extend`outwardly beyond the column and having a lateral flange embedded Withinthe adjacent slabs.

rIhe important function accomplished by my improved construction ofstructural head 'f is the effective resistance of the severe shearingand flexural stresseswhich occur in the slab where the same joins thecolumn by supplying'an effective and adequate support for the slab outfar enough from the column where the slab is in itself strong enough toresist safely the shearing and flexural stresses that come upon it. Inconnection with the reinforcing rods of a column and slabs, I pro-- videbetter conditions for resisting shear in the slab just outside of thehead and by having the slab rods pass through the head into the column,the lower part'of the slab just outside of the head is reenforcedagainst compression caused by the flexure and a better condition isprovided for resisting shear at this point.

n From the foregoing description it will be seen that I have provided astructural head ormember which when embedded in a column and slab attheir junction, will perform the structural functions heretoforeperformed by the flaring concrete head orcapital without increasing thethickness of the slab over what it would be if the flaring concrete headorV capital was used, whereby I am able to 2. In a reenforced concreteconstruction,

the 'combination of concrete columns and a concrete floor supportedthereby, of flat rigid head members embedded in the columns andextending into the adjacent portion of the floor having a horizontallydisposed exten- :5.

sion at its lower edge, said heads being provided with openings andreenforcing rods embedded in the columns and floor and passing throughsaid openings for strengthening the structure.

3. A structural head comprising a rigid body portion adapted to beembedded in the column and slabs at the junction thereof, havingopenings through which the reinforcing rods of the column and slab maypass for tying them thereto and an outwardly extending flange carried bythe outer edge of the body portion for forming additional support forthe slabs.

4. A structural head, comprising an approximately flat, horizontallydisposed rigid body portion of an area greater than the cross sectionalarea of the column and having openings to receive the reinforcing rodsof the column and slabs and an outwardly extending ledge surrounding theouter edge of ther body portion and forming additional support for theslabs.

5.v A structural head, comprising a rigid body portion having openingsthrough which the reinforcing rods of the column and slab mayY pass anda flange carried by the outer edge of the body portion at its loweredge.

6. The combination with concrete slabs with directly supporting columnstherefor, rigid heads consisting of single pieces of steel plate with anoutwardly protruding shelf around the outside, said shelf being set nearthe bottom of the slab embedded in the columns and extending into theadjacent slabs supported directly thereby and reinforcing means in saidslabs passing through and over said heads for strengthening the slab toresist the shearing and'flexural stresses that come upon it andreinforcing means in said columns passing through said head forstrengthening the column to resist the compression and flexural stressesthat come upon it.

7. The combination with concrete slabs with directly supporting columnstherefor, horizontally disposed rigid heads, each consisting of a singlepiece of steel plate with kan outwardly protruding shelf around theoutside, said shelf being set near the bottom of the slab, embedded incolumns and slabs at the junction thereof, said heads being providedWith a plurality of openings and providing room between the top of thehead and the top of the slab for several layers of reinforcing rods topass through in different directions, and reinforcing rods embedded insaid columns and slabs and passing through said openings in bothhorizontal and vertical directions for effectively strengthening` theslab just outside the head to resist the shearing and flexural stressesthat come upon it there 'and for eectively strengthening the column toresist compression and iexural stresses.

8. The combination with concrete slabs and directly supporting columns,rigid head members consisting each of a single steel plate havinglateral flanges embedded in the slabs and columns at the junctionthereof and reinforcing` rods embedded in columns and slabs having aconnection with said heads.

9. lnra reenforced concrete construction, the combination of concretecolumns and concrete floor slabs supported thereby, of flat rigid headmembers consisting vof a single piece of metal having angular memberssecured totheir edges embedded in the columns and extended into theadjacent portions of the concrete floor slab, said head being providedwith openings, reinforcing rods embedded in the columns and passingthrough the openings of said head members and reinforcing rods embeddedin the slabs and passing horizontally over said heads in two or moredirections for strengthening the structure by resisting the stressesthat. oc cnr in the slab and column caused by the load.

In testimony whereof I hereunto afliX my signature.

EDWARD W. HYDEyJR.` Y

